Pencil-sharpener



UNITED STATES 4 PATENT OFFICE.

ERNST BERNI-IARDT, OF NEWPORT, KENTUCKY PENCIL-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 418,883, dated January7, 1890.

Application filed November 13, 1889.

Serial No. 330,227. (No model.)

My invention is a cheap device for sharp` ening pencils, and isintended'principallyfor the use of school children.

Its object is to provide a device that children can easily handle anduse Without danger of ,cutting or injuring themselves.

The invention consists in the arrangement and combination of the partsillustrated in the accompanying drawings, in connection with which itwill be first fully described and then particularly -referred to andpointed out in the claims.

Figure 1 is a side elevation of myimproved form of instrument. Eig. 2 isa View of the same taken from the opposite side. Fig. 3 is an edge'elevation. Fig. 4. is a transverse section taken through line oc x. Fig.5 is a side elevation of a modiiied form. Eig. 6 is a transversesectioualview of the same, taken through line yy. Fig. 7 is a sideelevation of another modification. Fig. 8 is a longitudinal sec tionalView of the same through line a z.

The handle or blade-holderA is preferably formed of a strip of sheetmetal, one half of which is doubled over upon the other, forming a loopa at the bent end, and pressed together at the opposite end to clamp thesteel blade B. Both edges of the. piece back of the meeting ends arenotched back at c to clear the blade.

In the form shown in Figs. l to 4, inclusive, the blade is rmly clampedand held between the adjacent sides of the looped strip Ay by the sleeveC, which is a piece of metal bent around one sideaover both edges andhas 'its opposite edges c pressed down to clamp the steel blade B firmlyin place.

In the form shown in Figs. 5 and 6 one end of the strip A is formed withlateral Wings a2, which, when the strip is doubled over and the bladeplaced between it, are doubled over the edges and pressed down to holdthe blade firmly.

In the form shown inFigs. 7 and 8 the knife-blade is held between theoverlapping ends of the piece A by rivets d.

Instead of the' overlapped single strip A for clamping the blade, theremay be two Ypieces, and the sleeve Cbmay extend the same length as thepieces between which the blade is clamped, or any suitable handle may besubstituted for the looped end c.

The blade B may be made very thin, as there is no danger of its beingbroken, and thus require little sharpening.

In use the back edge of the slot a serves as a guard to prevent theblade from cutting too deeply, thus avoiding waste of the pencil andbreaking of the point.

What I claim isl. The pencil-Sharpener hereinbefore described,consisting of the clamping jaws notched at a. and the blade B, firmlyclamped between them, substantially as shown.

2. In a pencil-Sharpener, the combination of the looped piece A, notchedat a', the blade B between the notched portions of said piece, and thepiece C, notched to correspond with the notches in the piece A andclamped around the notched ends of said piece to hold the blade inplace.

ERNST BERNHARDT.

Witnesses:

CHAs. A. Elon, GEO. J MURRAY.

